diff --git a/datasets/raise/extract_noise.py b/datasets/raise/extract_noise.py
index 0e0ca46..429e03d 100755
--- a/datasets/raise/extract_noise.py
+++ b/datasets/raise/extract_noise.py
@@ -41,8 +41,8 @@ if raiseNotFlatFields:
 
 # Among:
 # - `None`
-# - `"sky"`
-# - `"wall"`
+# - `'sky'`
+# - `'wall'`
 type_ = None
 if type_ is not None:
     ranges = {
@@ -141,7 +141,6 @@ if denoiser == 'mean':
         colorMean = None
         numberOfImagesInColorMean = 0
         for imageFileName in tqdm(imagesFileNames, f'Computing mean of {color} images'):
-            #print(imageFileName)
             imageNpArray = getImageNpArray(imageFileName, False, color)
             if colorMean is None:
                 colorMean = imageNpArray